Extensible markup language

XML is the lingua franca of the wireless Web. Its strength is in its generality: XML can describe virtually any kind of structured data. Once described, the data can be presented in other formats. Moreover, XML is already being used for a host of server-server communication applications, which make it possible for different data servers to easily exchange information. The trend toward a common format for representing data will doubtlessly present new opportunities for both Web and wireless Web clients.